The most serious Byetta and Bydureon side effects are pancreatitis and kidney problems, and Bydureon has a black box warning — the FDA’s most serious warning — for thyroid cancer risk. Injection-site reactions may also occur with Bydureon and these may require surgery.

Is Bydureon safe to take?

Bydureon has a boxed warning from the Food and Drug Administration (FDA) about thyroid tumors and thyroid cancer. A boxed warning is the strongest warning the FDA requires. It alerts doctors and patients about drug effects that may be dangerous. In animal studies, Bydureon increased the risk of thyroid tumors.

Does Bydureon BCise cause cancer?

Bydureon and Bydureon BCise: This drug has been shown to cause thyroid cancer in some animals. It is not known if this happens in humans. If thyroid cancer happens, it may be deadly if not found and treated early.